A self-test
What does your browser reveal?
This page inspects your browser the way any website silently does the moment you arrive. The information shown here is not saved anywhere.
Run this in the browser you actually use for private browsing, so the results reflect that setup rather than this one.
Your browser fingerprint
Websites combine these details to recognise you, often with no cookie involved at all.
Reading browser signals…
How stable that combination is
A short hash of the signals above. The number itself means nothing. What matters is that it stays the same when you come back.
Calculating…
Local address exposure
WebRTC can hand a site addresses your browser knows about. This check uses no third-party server, so it sees only local addresses — use IPLeak below to test whether your public address leaks past a VPN.
Checking…
Tests that need a server
These checks cannot run inside this page. Open them to test your public address, your DNS and your full fingerprint against a service built for it.
- EFF — Cover Your TracksMeasures how identifiable your browser is and whether it blocks trackers.
- DNS Leak TestConfirms that your DNS queries go to the resolver you expect, not your internet provider.
- IPLeakShows your public address, along with WebRTC and DNS leaks, in one place.
- Tor Project — connection checkConfirms whether you are actually routing through the Tor network.
The information shown by these checks is not saved. Reload to run them again. For what to do about any of it, read Browse the web anonymously.
